FRONT AXLE BRAKES LININGS WEAR UNEVENLY (Cont)

TM 9-2320-285-24-1

2-46.

SERVICE BRAKE SYSTEM TROUBLESHOOTING (CONT)

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

9. FRONT AXLE BRAKES LININGS WEAR UNEVENLY (Cont)

Step 3.

Check if wedge assembly is out of front axle brake air chamber housing socket or is damaged

(wedge guide missing or broken).

a. If wedge assembly is out of front axle brake air chamber housing socket, reinstall (para 2-50a); if

wedge assembly is damaged, replace (para 2-50a).

b. If wedge assembly is correctly installed and not damaged, go to step 4 below.

Step 4.

Check that wedge assembly engages with plunger slots.

a. If wedge assembly does not engage plunger slots, disassemble and reassemble (para 2-50a).

b. If wedge assembly engages plunger slots, go to step 5 below.

Step 5.

Check that brake shoe hold down clips hold brake shoes against shoe support pads on spider.

a. If clips do not hold brake shoes properly, replace (para 2-50a).

b. If clips hold brake shoes properly, go to step 6 below.

Step 6.

Check brake shoe linings for grease or dirt contamination.

a. If brake shoe linings are contaminated, replace brake shoes (para 2-50a).

b. If brake shoe linings are not contaminated, refer to Malfunction 5 above.

10. REAR AXLE BRAKES LININGS WEAR UNEVENLY

Step 1.

Remove rear axle brakes air chambers (para 2-51d(2)).

Remove brake drum (para 2-44b).

Check for loose, missing, or damaged brake shoe and lining assemblies mounting hardware.

a. If mounting hardware is loose, missing, or damaged, tighten loose parts and replace missing or

damaged parts (para 2-50b).

b. If mounting hardware is not loose, missing, or damaged, go to step 2 below.

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